mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-28 08:33:54 +00:00
276 lines
8.7 KiB
Nix
276 lines
8.7 KiB
Nix
{pkgs, config, ...}:
|
|
|
|
with pkgs.lib;
|
|
|
|
let
|
|
|
|
inherit (pkgs) stdenv writeText udev procps;
|
|
|
|
cfg = config.services.udev;
|
|
|
|
extraUdevRules = pkgs.writeTextFile {
|
|
name = "extra-udev-rules";
|
|
text = cfg.extraRules;
|
|
destination = "/etc/udev/rules.d/10-local.rules";
|
|
};
|
|
|
|
modprobe = config.system.sbin.modprobe;
|
|
|
|
nixosRules = ''
|
|
|
|
# Miscellaneous devices.
|
|
KERNEL=="sonypi", MODE="0666"
|
|
KERNEL=="kvm", MODE="0666"
|
|
KERNEL=="kqemu", MODE="0666"
|
|
KERNEL=="vboxdrv", NAME="vboxdrv", OWNER="root", GROUP="root", MODE="0666"
|
|
KERNEL=="vboxadd", NAME="vboxadd", OWNER="root", GROUP="root", MODE="0660"
|
|
KERNEL=="vboxuser", NAME="vboxuser", OWNER="root", GROUP="root", MODE="0666"
|
|
'';
|
|
|
|
# Perform substitutions in all udev rules files.
|
|
udevRules = stdenv.mkDerivation {
|
|
name = "udev-rules";
|
|
buildCommand = ''
|
|
ensureDir $out
|
|
shopt -s nullglob
|
|
|
|
# Set a reasonable $PATH for programs called by udev rules.
|
|
echo 'ENV{PATH}="${udevPath}/bin:${udevPath}/sbin"' > $out/00-path.rules
|
|
|
|
# Set the firmware search path so that the firmware.sh helper
|
|
# called by 50-firmware.rules works properly.
|
|
echo 'ENV{FIRMWARE_DIRS}="/root/test-firmware ${toString config.hardware.firmware}"' >> $out/00-path.rules
|
|
|
|
# Add the udev rules from other packages.
|
|
for i in ${toString cfg.packages}; do
|
|
echo "Adding rules for package $i"
|
|
for j in $i/*/udev/rules.d/*; do
|
|
echo "Copying $j to $out/$(basename $j)"
|
|
echo "# Copied from $j" > $out/$(basename $j)
|
|
cat $j >> $out/$(basename $j)
|
|
done
|
|
done
|
|
|
|
# Fix some paths in the standard udev rules. Hacky.
|
|
for i in $out/*.rules; do
|
|
substituteInPlace $i \
|
|
--replace \"/sbin/modprobe \"${modprobe}/sbin/modprobe \
|
|
--replace \"/sbin/mdadm \"${pkgs.mdadm}/sbin/mdadm \
|
|
--replace \"/sbin/blkid \"${pkgs.utillinux}/sbin/blkid \
|
|
--replace \"/bin/mount \"${pkgs.utillinux}/bin/mount
|
|
done
|
|
|
|
# If auto-configuration is disabled, then remove
|
|
# udev's 80-drivers.rules file, which contains rules for
|
|
# automatically calling modprobe.
|
|
${if !config.boot.hardwareScan then "rm $out/80-drivers.rules" else ""}
|
|
|
|
echo -n "Checking that all programs called by relative paths in udev rules exist in ${udev}/lib/udev ... "
|
|
import_progs=$(grep 'IMPORT{program}="[^/$]' $out/* |
|
|
sed -e 's/.*IMPORT{program}="\([^ "]*\)[ "].*/\1/' | uniq)
|
|
run_progs=$(grep -v '^[[:space:]]*#' $out/* | grep 'RUN+="[^/$]' |
|
|
sed -e 's/.*RUN+="\([^ "]*\)[ "].*/\1/' | uniq)
|
|
for i in $import_progs $run_progs; do
|
|
if [[ ! -x ${pkgs.udev}/lib/udev/$i && ! $i =~ socket:.* ]]; then
|
|
echo "FAIL"
|
|
echo "$i is called in udev rules but not installed by udev"
|
|
exit 1
|
|
fi
|
|
done
|
|
echo "OK"
|
|
|
|
echo -n "Checking that all programs call by absolute paths in udev rules exist ... "
|
|
import_progs=$(grep 'IMPORT{program}="/' $out/* |
|
|
sed -e 's/.*IMPORT{program}="\([^ "]*\)[ "].*/\1/' | uniq)
|
|
run_progs=$(grep -v '^[[:space:]]*#' $out/* | grep 'RUN+="/' |
|
|
sed -e 's/.*RUN+="\([^ "]*\)[ "].*/\1/' | uniq)
|
|
for i in $import_progs $run_progs; do
|
|
if [[ ! -x $i ]]; then
|
|
echo "FAIL"
|
|
echo "$i is called in udev rules but not installed by udev"
|
|
exit 1
|
|
fi
|
|
done
|
|
echo "OK"
|
|
|
|
echo "Consider fixing the following udev rules:"
|
|
for i in ${toString cfg.packages}; do
|
|
grep -l '\(RUN+\|IMPORT{program}\)="\(/usr\)\?/s\?bin' $i/*/udev/rules.d/* || true
|
|
done
|
|
|
|
# Use the persistent device rules (naming for CD/DVD and
|
|
# network devices) stored in
|
|
# /var/lib/udev/rules.d/70-persistent-{cd,net}.rules. These are
|
|
# modified by the write_{cd,net}_rules helpers called from
|
|
# 75-cd-aliases-generator.rules and
|
|
# 75-persistent-net-generator.rules.
|
|
ln -sv /var/lib/udev/rules.d/70-persistent-cd.rules $out/
|
|
ln -sv /var/lib/udev/rules.d/70-persistent-net.rules $out/
|
|
''; # */
|
|
};
|
|
|
|
# The udev configuration file.
|
|
conf = writeText "udev.conf" ''
|
|
udev_rules="${udevRules}"
|
|
#udev_log="debug"
|
|
'';
|
|
|
|
# Udev has a 512-character limit for ENV{PATH}, so create a symlink
|
|
# tree to work around this.
|
|
udevPath = pkgs.buildEnv {
|
|
name = "udev-path";
|
|
paths = cfg.path;
|
|
pathsToLink = [ "/bin" "/sbin" ];
|
|
ignoreCollisions = true;
|
|
};
|
|
|
|
in
|
|
|
|
{
|
|
|
|
###### interface
|
|
|
|
options = {
|
|
|
|
boot.hardwareScan = mkOption {
|
|
default = true;
|
|
description = ''
|
|
Whether to try to load kernel modules for all detected hardware.
|
|
Usually this does a good job of providing you with the modules
|
|
you need, but sometimes it can crash the system or cause other
|
|
nasty effects.
|
|
'';
|
|
};
|
|
|
|
services.udev = {
|
|
|
|
packages = mkOption {
|
|
default = [];
|
|
merge = mergeListOption;
|
|
description = ''
|
|
List of packages containing <command>udev</command> rules.
|
|
All files found in
|
|
<filename><replaceable>pkg</replaceable>/etc/udev/rules.d</filename> and
|
|
<filename><replaceable>pkg</replaceable>/lib/udev/rules.d</filename>
|
|
will be included.
|
|
'';
|
|
};
|
|
|
|
path = mkOption {
|
|
default = [];
|
|
merge = mergeListOption;
|
|
description = ''
|
|
Packages added to the <envar>PATH</envar> environment variable when
|
|
executing programs from Udev rules.
|
|
'';
|
|
};
|
|
|
|
extraRules = mkOption {
|
|
default = "";
|
|
example = ''
|
|
KERNEL=="eth*", ATTR{address}=="00:1D:60:B9:6D:4F", NAME="my_fast_network_card"
|
|
'';
|
|
type = with pkgs.lib.types; string;
|
|
description = ''
|
|
Additional <command>udev</command> rules. They'll be written
|
|
into file <filename>10-local.rules</filename>. Thus they are
|
|
read before all other rules.
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
hardware.firmware = mkOption {
|
|
default = [];
|
|
example = [ "/root/my-firmware" ];
|
|
merge = mergeListOption;
|
|
description = ''
|
|
List of directories containing firmware files. Such files
|
|
will be loaded automatically if the kernel asks for them
|
|
(i.e., when it has detected specific hardware that requires
|
|
firmware to function). If more than one path contains a
|
|
firmware file with the same name, the first path in the list
|
|
takes precedence. Note that you must rebuild your system if
|
|
you add files to any of these directories. For quick testing,
|
|
put firmware files in /root/test-firmware and add that
|
|
directory to the list.
|
|
Note that you can also add firmware packages to this
|
|
list as these are directories in the nix store.
|
|
'';
|
|
apply = list: pkgs.buildEnv {
|
|
name = "firmware";
|
|
paths = list;
|
|
pathsToLink = [ "/" ];
|
|
ignoreCollisions = true;
|
|
};
|
|
};
|
|
|
|
};
|
|
|
|
|
|
###### implementation
|
|
|
|
config = {
|
|
|
|
services.udev.extraRules = nixosRules;
|
|
|
|
services.udev.packages = [ pkgs.udev extraUdevRules ];
|
|
|
|
services.udev.path = [ pkgs.coreutils pkgs.gnused pkgs.gnugrep pkgs.utillinux pkgs.udev ];
|
|
|
|
jobs.udev =
|
|
{ startOn = "startup";
|
|
|
|
environment = { UDEV_CONFIG_FILE = conf; };
|
|
|
|
path = [ udev ];
|
|
|
|
preStart =
|
|
''
|
|
echo "" > /proc/sys/kernel/hotplug || true
|
|
|
|
mkdir -p /var/lib/udev/rules.d
|
|
touch /var/lib/udev/rules.d/70-persistent-cd.rules /var/lib/udev/rules.d/70-persistent-net.rules
|
|
|
|
# Do the loading of additional stage 2 kernel modules.
|
|
# Maybe this isn't the best place...
|
|
for i in ${toString config.boot.kernelModules}; do
|
|
echo "Loading kernel module $i..."
|
|
${modprobe}/sbin/modprobe $i || true
|
|
done
|
|
|
|
mkdir -p /dev/.udev # !!! bug in udev?
|
|
'';
|
|
|
|
daemonType = "fork";
|
|
|
|
exec = "udevd --daemon";
|
|
};
|
|
|
|
jobs.udevtrigger =
|
|
{ startOn = "started udev";
|
|
|
|
task = true;
|
|
|
|
path = [ udev ];
|
|
|
|
script =
|
|
''
|
|
# Let udev create device nodes for all modules that have already
|
|
# been loaded into the kernel (or for which support is built into
|
|
# the kernel). The `STARTUP' variable is needed to force
|
|
# the LVM rules to create device nodes. See
|
|
# http://www.mail-archive.com/fedora-devel-list@redhat.com/msg10261.html
|
|
udevadm control --env=STARTUP=1
|
|
udevadm trigger --action=add
|
|
udevadm settle # wait for udev to finish
|
|
udevadm control --env=STARTUP=
|
|
|
|
initctl emit -n new-devices
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
}
|